Trading pair details page refresh (part 1)

[kenkunz]

See epic #636

Goal

As an investor, I want the trading pair details page to include updated stats, labels and layout improvements, so that I can better compare different trading pairs.

Acceptance criteria

1. ✅ add swap fee % to header for all pairs (currently only shown on Uniswap V3 pairs)
   • update "Swap fee" label to "Trading fee"
2. ✅ add blockchain logo to subtitle
3. ✅ remove liquidity metric (now that TVL is available on all pairs)
4. ✅ remove Uniswap v3 beta warning
5. ✅ move buy/sell buttons to single "swap" header button
6. ✅ remove blockchain explorer button (same as smart contract address)
7. ✅ Move "API and historical data" and "Copy Python identifier" buttons up to tighten up layout.
   • removed "API and historical data" button as the page is no longer needed

TODO: Separate ticket(s)

To manage scope of this ticket, the below items should move moved to separate tickets:

10. consider making above buttons open a modal dialog instead of new page (merge "Copy Python…" into dialog) not needed
11. update HUD to match newer style used on strategy charts (tooltip follows mouse; full labels). NOTE: this is a departure from TradingView™ style HUD. de-scoped – see Improve trading pair chart HUD style #785
12. use consistent (non-US) date format (e.g., 2023-09-23) addressed in another ticket
13. consider reducing height of TVL chart and making it a "panel" of price chart rather than separate (linked) chart de-scoped – see Improve trading pairs linked TVL chart #786
14. right-align data cells in time period summary (numeric values) see Trading pair details page refresh (part 2) #776
15. replace liquidity values with TVL (not currently available in API) see Replace liquidity values with TVL on pair details time period summary #787
16. consider rethinking / replacing this section (relies on expensive API calls; hidden below the fold) after feedback, decided to keep this section as-is

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